JPH0621804Y2 - Vehicle stabilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is directed to a stabilizer provided on a vehicle such as a truck lane or an aerial work vehicle for stabilizing the vehicle.
Particularly, a jack device is rotatably attached between the vertical position and the horizontal position or the inclined position at the tip of a slide beam that is provided overhanging on the vehicle, and the jack device is rotated by a hydraulic cylinder. The present invention relates to a vehicle stabilizer.

(Prior Art) This type of vehicle stabilizer has a jack device at the tip of a slide beam that is rotated to a horizontal position or an inclined position.
By extending the slide beam, the jack device is extended beyond the guardrail of the roadway, and the jack device can be extended to the vertical position by the hydraulic cylinder to stabilize the vehicle by extending the jack. It is extremely advantageous. By the way, when the jack device is rotated to the vertical position by the hydraulic cylinder, it is dangerous to position the jack device to the vertical position only by the hydraulic cylinder, because it is dangerous when the hydraulic cylinder is expanded and contracted carelessly due to leakage oil. This type of vehicle stabilizer has a manually operated fixing device for fixing the jack device in a vertical position.

(Problems of Prior Art) However, the conventional vehicle stabilizer provided with the above-described manually operated fixing device must operate the fixing device each time the stabilizer is used or stored. Not only is it time-consuming, but it is extremely dangerous if you forget to operate the fixing device.

The vehicle stabilizer of the present invention is a novel vehicle stabilizer in which the jack device is automatically fixed and released in the vertical position by utilizing the expansion and contraction of a hydraulic cylinder that rotates the jack device. It is intended to provide.

(Means for Solving Problems) The vehicle stabilizer of the present invention is configured as follows in order to solve the problems of the above-mentioned conventional techniques.

A jack device is attached to the tip of a slide beam that is freely overhanging on the vehicle via a horizontal support shaft,
One side thereof is attached to a bracket provided on the sled beam and the other side is attached to a bracket provided on the jack device via a support shaft, respectively, and the reduction device rotates the jack device to a vertical position. A stabilizer for a vehicle, comprising a hydraulic cylinder for rotating a jack device to a horizontal or inclined position, wherein one of the brackets is provided with the support shaft for attaching the hydraulic cylinder to the bracket. A long hole that engages with the shaft so that it can move a little closer to and away from the shaft is formed, and a different hydraulic cylinder after turning the jack device to the vertical position by the contraction movement of the hydraulic cylinder is formed in the other bracket of the both brackets. Is provided with an engaging portion that engages the one bracket with the movement of the support shaft in the elongated hole due to the contraction movement of the support shaft. Stabilizer of the vehicle, characterized in.

(Operation) The operation of the vehicle stabilizer of the present invention constructed as described above is as follows.

When the hydraulic cylinder is contracted, the jack device rotates about the horizontal support shaft to the vertical position. When the hydraulic cylinder is further contracted, the support shaft engaged with the elongated hole in the elongated hole of the one bracket moves in the approaching direction or the separating direction with respect to the horizontal axis. When the support shaft moves toward or away from the horizontal shaft, the support shaft engages with the engaging portion provided on the other bracket, and as a result, the jack device is fixed in the vertical position.

When the hydraulic cylinder is extended, first, the support shaft engaged in the long hole in one of the brackets moves in a direction away from or close to the horizontal shaft, and the support shaft moves to the other bracket. It disengages from the provided engaging portion. When the hydraulic cylinder further extends, the jack device rotates about a horizontal axis to a horizontal position or an inclined position.

(Embodiment) An embodiment of a vehicle stabilizer of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a slide beam that is provided on a vehicle (not shown) so as to project and be stored. In this embodiment, the slide beam 1 is shown as being extended by horizontally extending from one side of the vehicle. Reference numeral 2 denotes a jack device attached to the tip of the slide beam 1 via a horizontal support shaft P. The jack device 2 has a vertical position (state shown by a solid line in FIGS. It is rotatably supported with respect to the state shown by the chain line in FIGS. The jack device 2 has an outer cylinder 2a.
And the grounding plate 2c on the outer end of the outer cylinder 2a
And an inner cylinder 2b having an inner cylinder 2b. The inner cylinder 2b extends and contracts with respect to the outer cylinder 2a by a hydraulic cylinder (not shown). In the jack device 2, the leg plate 2c is located on the lower side in the vertical position. 3 is
The hydraulic cylinder 3 is a hydraulic cylinder for rotationally driving the jack device 2 between a vertical position and a horizontal position.
Attach the tip of the piston rod 3a to the outer cylinder 2a of the jack device 2.
It is attached to a bracket 4 fixed to a piston via a support shaft 5, and the piston rod 3a of the cylinder 3b is attached to the bracket 4.
It is attached via a support shaft 7 to a bracket 6 whose side ends are fixed to the slide beam 1. The hydraulic cylinder 3
The contracting movement rotates the jack device 2 to a vertical position about the horizontal support shaft P, and the extension movement rotates the jack device 2 to a horizontal position about the horizontal support shaft P.

In one bracket 4 of the brackets 4 and 6 to which the hydraulic cylinder 3 is attached via the support shafts 5 and 7, the support shaft 5 for attaching the tip of the piston rod 3a of the hydraulic cylinder 3 to the bracket 4 is attached to the horizontal support shaft P. Is formed with a long hole 4a that engages with the above so as to be able to move slightly toward and away.

The attachment of the support shaft 7 to the other bracket 6 of the brackets 4 and 6 is a normal pivotal connection. An engagement portion 8 is provided on the bracket 6. In the engaging portion 8, the support shaft 5 is attached to the bracket 4 at the vertical position of the jack device 2.
When moving in the direction close to the horizontal support shaft P in the long hole 4a of
It is provided at a position where it engages with the support shaft 5 based on this movement. In the figure, 9 is a stopper provided on the bracket 6, and this stopper 9 is located in a position where the support shaft 5 is separated from the horizontal support shaft P in the elongated hole 4a of the bracket 4. When the jack device reaches the vertical position from the horizontal position, the support shaft 5 abuts and prevents the jack device 2 from rotating further (beyond the vertical position). However, the stopper 9 may be provided at an appropriate position between the bracket 4 and the bracket 6.

Next, the operation will be described. When the hydraulic cylinder 3 is contracted from the horizontal position of the jack device shown in FIGS. 2 and 3, the jack device 2 rotates in the direction a to the vertical position (state shown by the solid line). In the present embodiment, since the position of the jack device 2 near the upper end of the outer cylinder 2a is rotatably attached to the tip of the slide beam 1 via the horizontal support shaft P, the jack device 2 reduces the hydraulic cylinder 3 by its own weight. Following to, it rotates to the vertical position. Therefore, at the time of this rotation, the support shaft 5 is located in the long hole 4a of the bracket 4 at a position separated from the horizontal support shaft P. When the jack device 2 comes to the vertical position, the support shaft 5 abuts against the stopper 9 provided on the bracket 6, and further rotation of the jack device 2 is restricted. When the hydraulic cylinder 3 is further contracted, the support shaft 5 moves in the elongated hole 4a in the direction approaching the horizontal support shaft P. By this movement, the support shaft 5 engages with the engaging portion 8 provided on the bracket 6, and as a result, the rotation of the jack device 2 with respect to the slide beam 1 is restricted by the support shaft 5 (the state shown by the solid line). ).

When moving the jack device 2 from the vertical position to the horizontal position,
The hydraulic cylinder 3 may be driven to extend from the state shown by the solid line. In this case, the jack device 2 goes through the reverse process.
Is the horizontal position.

In the above embodiment, the outer cylinder 2a of the jack device 2 is rotatably attached to the tip of the slide beam 1 via the horizontal support shaft P so that the jack device 2 is brought to the vertical position by its own weight. But the jack device 2 is not brought to the extended position by its own weight,
In the case where the outer cylinder 2a of the jack device 2 is rotatably attached to the tip of the slide beam 1 through the horizontal support shaft P, the hydraulic cylinder 3 is contracted to move the jack device 2 horizontally. When rotating from the position (the position shown by the alternate long and short dash line) to the vertical position (the position shown by the solid line), the support shaft 5 tries to move to a position close to the horizontal support shaft P within the elongated hole 4a. In this case, an urging means 10 is provided between the bracket 4 and the support shaft 5 for constantly urging the support shaft 5 in the long hole 4a at a position separated from the horizontal support shaft P. A cam surface (illustrated by a chain line in FIG. 3) 11 for maintaining the support shaft 5 at a position apart from the horizontal support shaft P in the elongated hole 4a may be formed at positions other than the vertical position of the jack device 2.

Further, the bracket 4 in the above embodiment is attached to the slide beam 1 side, and the bracket 6 is attached to the jack device 2.
It may be mounted on the side.

Further, although the jack device 2 is configured to be rotatable to the horizontal position in the above-described embodiment, it is not always necessary to rotate the jack device 2 to the horizontal position, and it is suitable between the ground plate 2c and the road surface. The tilt position is sufficient as long as a clearance (a clearance sufficient for the jack device 2 to pass over an obstacle such as a guard rail when the slide beam is extended) can be secured.

(Effect) The vehicle stabilizer of the present invention configured and operated as described above is
The jack device 2 can be grounded by extending over a gator rail or the like, but the mechanical fixing of the jack device 2 in the vertical position is automatically performed, so that the operation is easy and there is no forgetting to fix it. It has the effect of being safe.

[Brief description of drawings]

1 to 3 show an embodiment of a vehicle stabilizer according to the present invention. FIG. 1 is a front view of a main part, FIG. 2 is a left side view of FIG. 1, and FIG. 1. It is the XX sectional arrow line view of FIG. Slide beam; 1, jack device; 2, horizontal support shaft; P, hydraulic cylinder; 3, bracket; 4, 6, support shaft; 5, 7, elongated hole; 4a, engaging portion; 8,

Claims (1)

[Scope of utility model registration request] 1. A jack device is attached to the tip of a slide beam that is provided overhanging on a vehicle via a horizontal support shaft, and one side of the jack device is attached to a bracket provided to the slide beam and the other side is provided to the jack device. A vehicle equipped with a hydraulic cylinder that is attached to each bracket via a support shaft to rotate the jack device to a vertical position by its contracting motion and to rotate the jack device to a horizontal or inclined position by its expanding motion. In the stabilizer, one bracket of the both brackets, the support shaft for mounting the hydraulic cylinder to the bracket, a long hole that engages with the horizontal shaft so as to be able to move slightly toward and away from the horizontal shaft, The other bracket of the two brackets is provided with a different oil after the jack device is rotated to the vertical position by the contraction movement of the hydraulic cylinder. The movement of the support shaft in said slot associated with reduced movement of the cylinder, stabilizer of the vehicle, characterized in that is provided with engaging portion engaged with the support shaft.